I ran into an issue. When I am trying to activate a plugin, any plugin, I am getting a white screen. I tried to change theme and it just won't let me.
I then went to wp-config.php and turned on debugging and these are the errors I am getting when trying to change theme:
Notice: yith_wcwl_products cookie cannot be set - headers already sent by /home1/website/public_html/wp-content/themes/flatsome-child/functions.php on line 1 in /home1/website/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php on line 835
Notice: Constant WP_CRON_LOCK_TIMEOUT already defined in /home1/website/public_html/wp-config.php on line 91
Notice: Constant AUTOSAVE_INTERVAL already defined in /home1/website/public_html/wp-config.php on line 92
Notice: Constant WP_POST_REVISIONS already defined in /home1/website/public_html/wp-config.php on line 93
Notice: Constant EMPTY_TRASH_DAYS already defined in /home1/website/public_html/wp-config.php on line 94
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-content/plugins/flexible-shipping/classes/flexible-shipping-plugin.php on line 169
Warning: Cannot modify header information - headers already sent by (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-admin/includes/misc.php on line 1124
These are the errors when trying the activate a plugin:
Notice: yith_wcwl_products cookie cannot be set - headers already sent by /home1/website/public_html/wp-content/themes/flatsome-child/functions.php on line 1 in /home1/website/public_html/wp-content/plugins/woocommerce/includes/wc-core-functions.php on line 835
Notice: Constant WP_CRON_LOCK_TIMEOUT already defined in /home1/website/public_html/wp-config.php on line 91
Notice: Constant AUTOSAVE_INTERVAL already defined in /home1/website/public_html/wp-config.php on line 92
Notice: Constant WP_POST_REVISIONS already defined in /home1/website/public_html/wp-config.php on line 93
Notice: Constant EMPTY_TRASH_DAYS already defined in /home1/website/public_html/wp-config.php on line 94
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-content/plugins/flexible-shipping/classes/flexible-shipping-plugin.php on line 169
Warning: Cannot modify header information - headers already sent by (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-admin/includes/misc.php on line 1124
Warning: Cannot modify header information - headers already sent by (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-includes/pluggable.php on line 1219
Warning: Cannot modify header information - headers already sent by (output started at /home1/website/public_html/wp-content/themes/flatsome-child/functions.php:1) in /home1/website/public_html/wp-includes/pluggable.php on line 1219
My flatsome-child/function.php file is empty.
I am assuming there errors creates more problems throughout the website.
How can I fix this?
Thanks.
function.phpgiven with the theme and problem solved. Though I still get the already defined stuff. I will look at the article you mentioned and will update soon. Thanks for the help!headers already senterror. Can you please post an answer so I can mark this as solved?